Table 2.

Opsonophagocytic activity, cell-associated capsular polysaccharide, and teichoic acid content of S. pneumoniae variants

S. pneumoniae typeStrainColony phenotypeOpsonophagocytic activity (GMT)Cell-associated capsular polysaccharide (ng/μg of protein)Cell-associated teichoic acid (pmol/μg of protein)
6BP382Opaque11.3233.419,500
P383Transparent342.084.035,150
6BP763Opaque19.0506.9 NDa
P764Intermediate362.061.8ND
P765Transparent304.023.2ND
P806Opaque (revertant)18.0361.0ND
9VP62Opaque102.0211.68,000
P63Intermediate226.0140.65,900
P64Transparent256.0122.918,700
18CP71Opaque192.0645.218,650
P73Transparent242.0576.538,680
  • a ND, not determined.